US PATENT SUBCLASS 525 / 326.1
.~.~.~ Chemically after treated solid polymers derived from ethylenically unsaturated monomers only


Current as of: June, 1999
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525 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {4}
50  DF  .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32}
55  DF  .~.~ At least one solid polymer derived from ethylenic reactants only {25}
326.1.~.~.~ Chemically after treated solid polymers derived from ethylenically unsaturated monomers only {24}
326.2  DF  .~.~.~.~> Polymer derived from fluorine monomer {2}
326.5  DF  .~.~.~.~> Polymer derived from silicon monomer
326.6  DF  .~.~.~.~> Polymer derived from monomer containing atom other than: C, H, N, O, S, halogen or group IA or IIA carboxylate
326.7  DF  .~.~.~.~> Polymer derived from monomer containing nitrogen atom as part of a heterocyclic ring {2}
327.2  DF  .~.~.~.~> Polymer derived from monomer containing chalcogen as part of heterocyclic ring other than solely as cyclic anhydride of ethylenically unsaturated dicarboxylic acid {1}
327.4  DF  .~.~.~.~> Polymer derived from carboxylic acid anhydride monomer {4}
327.9  DF  .~.~.~.~> Polymer from unsaturated petroleum hydrocarbon fraction as monomer
328.1  DF  .~.~.~.~> Polymer derived from acetylenic monomer
328.2  DF  .~.~.~.~> Polymer derived from monomer containing nitrogen other than: unsubstituted ammonium, acrylonitrile, acrylamide, methylolacrylamide and the corresponding methacryl materials {2}
328.5  DF  .~.~.~.~> Polymer derived from sulfur monomer
328.6  DF  .~.~.~.~> Polymer derived from ketone monomer
328.7  DF  .~.~.~.~> Polymer derived from aldehyde monomer
328.8  DF  .~.~.~.~> Polymer derived from alcohol monomer
328.9  DF  .~.~.~.~> Polymer derived from ether monomer
329.1  DF  .~.~.~.~> Polymer derived from acrylonitrile or methacrylonitrile monomer {1}
329.4  DF  .~.~.~.~> Polymer derived from acrylamide or methacrylamide monomer
329.5  DF  .~.~.~.~> Polymer derived from carboxylic acid or derivative monomer other than: vinyl acetate; or acrylic-or-methacrylic-acid, or derivatives {1}
329.7  DF  .~.~.~.~> Polymer derived from acrylic or methacrylic acids, acid halides or salt monomers {4}
330.3  DF  .~.~.~.~> Polymer derived from acrylic or methacrylic esters, or vinyl acetate monomer {3}
330.7  DF  .~.~.~.~> Polymer derived from halogen monomer {2}
331.7  DF  .~.~.~.~> Ethylene-propylene terpolymer, e.g., EPT, EPDM, EPR, etc. {1}
331.9  DF  .~.~.~.~> Polymer derived from monomer containing at least two ethylenic groups or diene rubber {7}
333.3  DF  .~.~.~.~> Polymer derived from aromatic hydrocarbon monomer, e.g., styrene, etc. {3}
333.7  DF  .~.~.~.~> Polymer derived from acyclic hydrocarbon monomer only {3}


DEFINITION

Classification: 525/326.1

Chemically after treated solid polymers derived from ethylenically unsaturated monomers only:

(under subclass 55) Product wherein a solid polymer solely derived from ethylenically unsaturated monomers has been chemically modified by a treatment in the presence of a chemical treating agent.

(1) Note. See Lines With Other Classes and Within This Class, section II. B(4)(a) through II. B(4)(e) of the Class Definition for a discussion of classifying patents into this subclass and its indents vis-a-via other areas.

(2) Note. A material is presumed to be a rubber if it is described as an elastomer or if Mooney viscosity is given.

SEE OR SEARCH THIS CLASS, SUBCLASS:

337, through 388, for vulcanizable or cross-linkable compositions

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, the Glossary, for the definition of "chemical treating agent". 526, Synthetic Resins or Natural Rubbers,

78+, for process of adding material to the zone of an ongoing polymerization of ethylenically unsaturated monomers. Such added materials are often identified as chain stoppers, chain terminators or chain transfer agents.